An ultra-wideband injection-locked frequency divider with a multi-order resonator and the passive injection-boosted technique

[摘要] This paper presents an ultra-wideband injection-locked frequency divider (ILFD) design which is applicable to a multi-applications system. A transformer-based multi-order resonator is utilized in the ILFD to attain a flat phase response. The passive injection-boosted technique is proposed to increase the injection signal amplitude and thus widen the locking range. With the injection-boosted technique and the multi-order resonator, the proposed ILFD demonstrates a measured locking range of 50GHz, covering 48GHz to 98GHz. The divider designed in a 40-nm process consumes a DC power of 11.2mW excluding buffers and occupies a core size of 0.38×0.63mm2.

[学科分类] 电子、光学、磁材料

[关键词] injection-locked frequency divider;ultra-wideband;passive injection-boosted technique;multi-order resonator;locking range